Twelve men and women have been chosen to be part of their Phaeton mission, a 10-year trek to explore a remote planetary process. As a way to endure the strain of being limited with their high tech boat, the crew moves the time utilizing virtual reality modules which permit them to take on several different identities. But whilst the ship approaches a critical period of their journey, there is a deadly flaw discovered forcing one to question if somebody onboard might be described as a killer.